api: Fix clang warning

api: Fix clang warning

Fix the following warning by simply deleting the line.  The variable
path_dir_end is not used after this line, and thus does not need to be
set.

	api.c:2384:19: warning: expression which evaluates to zero treated as a
		null pointer constant of type 'char *' [-Wnon-literal-null-conversion]
		 2384 |                         path_dir_end = '\0';

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>